Wrench



H. HOFFMAN April 2, 1929.

WRENGH Filed Jan. 20, 1923 ilk" Patented Apr. 2, 1929.

UNITED STATES HENRY HOFFMAN, or OMAHA, NEBRASKA.

WRENCH.

Application filed January 20, 1928. Serial No. 248,204.

My present invention has reference to a spanner wrench for coupling or uncoupling fire hose, and my object is the provision of a wrench for this purpose which may be easily,

quickly and securely attached to the lugs. of the hose coupling to turn the same to couple or uncouplethe hose and which is likewise operable to be quickly brought out of engagement with the coupling.

A further object is the provision of a spanner wrench for this purpose that'includes a handle having a notched end that is received in and pivoted to a lug receiving socket on one end of a curved jaw,-the other end of the jaw being provided with an opening for the other lug of the handle, while arranged for sliding movement on the handle there is a spring influenced latch that is engageablewith the socket for holding the jaw locked to the handle, when the wrench is in coupling engaging position and further whereby an opposite movement of the latch permits of the swinging of the handle and jaw to bring the wrench out of engagement with the coupling.

To the attainment of the foregoing the invention consists in certain other novel features of construction and operative association of parts, one satisfactory embodiment of which is disclosed "by the accompanying drawings.

In the drawings:

Figure 1 is a side elevation of my improve.- ment, with parts in section.

Figure 2 is an edge View thereof.

Figure 3 is aside elevation showing the manner in which the parts of the wrench are operated to release the coupling therefrom.

In the showing of the drawings, my improvement is of a construction to operate upon a hose coupling 1 having lugs 2, but ohviously the improvement may be provided with pins or lugs to operate upon couplings having depressions therein for the reception of such pins or lugs.

The improvement contemplates the employment of a handle 1 having a cross sectionally squared portion '2 formed with a rabbeted end to provide the same withaprojecting extension or finger 3. The squared end 2 of the handle 1 is received in a bore or V aperture 4 provided in a boss or extension 5 at one end of the curved aw 6. The outer wall of the extension is cut away or slot-ted t0 the outer end of the socket, and the terminal of the slot is inclined, as at 7 The opposite wall of the socket, and the finger provide a space t-herebetween for one of the lugs 2 of a coupling 1 and the other end of the jaw 6 1S provided with a recess or opening 8 for the second lug 2 of the coupling. The end 2' of the handle 1 is pivotally secured, asat 9, in the jaw extension 5.

Arranged for slidable movement on the handle 1' is the latchmember 10 which has a socket entering from its outer end, as indicated by the numeral 12. The inner or bottom wall of this socket is provided with a shoulder 13 that surrounds a squared opening 'therethrough and through this opening the squared end 2 of the handle 1' passes. Having one end fixed to the handle 1, and exerting apressure against the-shoulder 13 of the slidable latch 10 is a coil spring 14. The latch 10, on one of its faces is formed with a lip extension 15 and this lip is designed for contacting engagement with the outer wall of the extension 5 of the jaw 6.

The spring 14 will at all times urge the latch 10 in the direction of the jaw, so that when the jaw is swung to coupling engaging position on the handle, the lip 15 thereof will engage with one of the'walls of the part 5 of the jaw, and thus lock the jaw on the handle. By moving the slidable latch 10 in an opposite direction, the handle may be swung on the jaw and likewise the jaw may be swung on the handle. When the jaw is swun to open position one of the straight edges 0% provided with a bore in which the squared end of the handle is received and in which the said end of the handle is pivoted, the outer wall of the perforated extension of thejaw having its upper portion slotted forming an the end 2' of. p I the handle 1' will rest-on the inclined wall or angle shoulder, and the finger of the handle the handle passes, a spring having one end and the opposite wall of the socket providing fixed on the handle and exerting a pressure a space therebetween, the other end of the jaw flgalnst t shoulder and a pro ecting lip on 10 having an aperture therethrough; a slidable one end of the latch for engagement with the 5 latch on the handle having a socket portion socket end of the jaw.

' with a square opening through the bottom In testimony whereof I aflix my signature.

through which opening the squared end of HENRY HOFFMAN. 

